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SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 31
Trowel Arm Adjustment
Shown in Figure 41 is the adjustment fixture with a trowel arm
inserted. As each trowel arm is locked into the fixture, the arm bolt
is adjusted to where it contacts a stop on the fixture. This will
consistently adjust all of the trowel arms, keeping the finisher as
flat and evenly pitched as possible.
1. Locate the trowel arm adjustment tool P/N 1817. Set the
adjustment tool for a clock-wise blade rotation, meaning the
fixture arm is in the "UP" position.
Figure 41. Trowel Arm Adjustment Tool
SCT SERIES TROWEL — MAINTENANCE
4. Loosen the locking nut on the trowel arm lever, then turn the
trowel arm adjusting bolt until it barely touches (.010") the
adjusting bolt on the fixture.
5. After the correct adjustment has been made, tighten lock nut
on trowel arm lever to lock in place.
6. Loosen locking bolts on adjustment fixture, and remove
trowel arm from fixture.
7. Repeat steps 2-7 for the remaining trowel arms.
2. Un-screw the locking bolts on the adjustment tool, and place
the trowel arm into the adjustment fixture channel as shown
in Figure 43. A
thin shim
may be required to cover the blade
holes on the trowel arm. Make sure to align the trowel
adjustment bolt with the fixture adjustment bolt.
3. Using an allen wrench, tighten the locking bolts on the
adjustment tool and securely lock the trowel arm in place.
Re-Assembly
1. Clean and examine the upper/lower wear plates and thrust
collar. Examine the entire spider assembly. Wire brush any
concrete or rust build-up. If any of the spider components are
found to be damaged or out of round, replace them.
2. Make sure that the bronze trowel arm bushing is not damage
or out of round. Clean the bushing if necessary. If the bronze
bushing is damage or worn, replace it.
3. Reinstall bronze bushing onto trowel arm.
4. Repeat steps 2 -3 for each trowel arm.
5. Make sure that the spring tensioner is in the correct position
to exert tension on the trowel arm.
6. Insert all trowel arms with levers into spider plate (with bronze
bushing already installed) using care to align grease hole on
bronze bushing with grease hole fitting on spider plate.
7. Lock trowel arms in place by tightening the hex head zerk
grease fitting and jam nut.
8. Re-install the blades back onto the trowel arms.
9. Install stabilizer ring onto spider assembly.
10. Reinstall lower wear plate,
thrust collar
and
upper wear
ring
in the
reverse order
that they were dis-assembled onto
the spider shaft. Make sure that there is little or no lateral
movement between the thrust collar and the spider shaft.
11. Carefully lift
the upper trowel assembly
, line up the key-
way on gear box main shaft and insert into spider assembly.
12. Reinstall square head cone point into spider plate and
tighten in place. Tighten jam nut. Use care in making sure
point of set screw engages groove in gear box main shaft.
13. Lubricate all grease points (zerk fittings) with premium
"
Lithum 12"
based grease, conforming to NLG1 Grade #2
consistency.